Gas permeability tester industry is also known as gas permeability meter, differential pressure method gas permeability meter, gas permeability tester, gas permeability tester, gas permeability tester. Air permeability test refers to the barrier effect of packaging materials on gas and other permeants, air permeability performance test is an important indicator to analyze the shelf life of products from the perspective of packaging. Gas permeability tester is suitable for the determination of gas permeability, solubility coefficient, diffusion coefficient and permeability coefficient of plastic film, composite film, high barrier material, sheet and metal foil at various temperatures.

Commonly used names: 

Gas Permeability Tester, Differential Pressure Gas Permeability Tester, Gas Permeability Tester, Gas Permeability Tester, Gas Permeability Tester, Gas Permeability Tester, Differential Pressure Gas Permeability Tester
The permeability tester industry is also known as differential pressure method gas permeability tester. Air permeability test refers to the barrier effect of packaging materials on gas and other permeants, air permeability test is an important indicator to analyze the shelf life of products from the perspective of packaging.
Gas permeability tester is suitable for the determination of gas permeability, solubility coefficient, diffusion coefficient and permeability coefficient of plastic film, composite film, high barrier material, sheet and metal foil at various temperatures.
Test Principle

The pre-treated specimen is placed between the upper and lower test chambers, clamped, and the low-pressure chamber (lower chamber) is first vacuumed, and then the whole system is evacuated, when the specified vacuum is reached, the lower chamber is closed, and the high-pressure chamber (upper chamber) is filled with a partially pressurized test gas, and the formation of a constant pressure difference (adjustable) is ensured on both sides of the specimen, so that the gas will be penetrated from the high-pressure side to the low-pressure side by the pressure gradient, thus obtaining the various barrier parameters of the tested specimen through the monitoring of pressure in the low-pressure side. The gas will penetrate from the high-pressure side to the low-pressure side under the effect of pressure difference gradient, through the monitoring of the pressure in the low-pressure side, so as to derive the various barrier parameters of the test specimen.